Re: [patch 13/20] timer: Switch to a non cascading wheel

[Thomas Gleixner]

On Mon, 13 Jun 2016, Peter Zijlstra wrote:
> On Mon, Jun 13, 2016 at 08:41:00AM -0000, Thomas Gleixner wrote:
> > +
> > +   /* Cascading, sigh... */
> 
> So given that userspace has no influence on timer period; can't we
> simply fail to support timers longer than 30 minutes?
> 
> In anything really arming timers _that_ long?

Unfortunately yes. Networking being one of those. Real cascading happens once
in a blue moon, but it happens.

Thanks,

        tglx